IEEE C57.12.21-2000
- American National Standard Requirements for Pad-Mounted, Campartmental-Type, Self-Cooled, Single-Phase Distribution Transformers
- standard by IEEE, 12/31/1992
- Category: IEEE
$67.00
$34.00
New IEEE Standard - Inactive-Withdrawn.This standard covers certain electrical, dimensional, and mechanical characteristics and takesinto consideration certain safety features of single-phase, 60 Hz, mineral-oil-immersed, self-cooled, padmounted, compartmental-type distribution transformers with high-voltage bushings. These transformers are rated 167 kVA and smaller, with high-voltages of 34500 GRD/19900 volts and below for operation between one phase and grounded neutral, and low-voltage of 240/120 volts. These transformers are generally used for step-down purposes from an underground primary cable supply.NOTE¿¿¿Refer to latest federal regulations concerning polychlorinated biphenyl (PCB) contaminations in transformers.
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